Optimal control of multi-photon isotope separation using ultra-short intense laser pulses: Density operator theory

Yukiyoshi Ohtsuki; Yuichi Fujimura

doi:10.1016/j.chemphys.2007.05.032

Optimal control of multi-photon isotope separation using ultra-short intense laser pulses: Density operator theory

Yukiyoshi Ohtsuki, Yuichi Fujimura

SCI - Chemistry

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Wave packet isotope separation using short intense laser pulses is examined by means of optimal control simulation through a case study of the separation of a ⁷⁹Br₂/⁸¹Br₂ mixture. Both electronic and vibrational degrees of freedom are considered. A designed optimal pulse enhances the isotope-dependent phase shifts in the wave packets through multi-photon transitions, causes isotope-dependent quantum interferences, and transfers each isotope to its specified objective state. The present isotope separation scheme achieves a high degree of selectivity even in the presence of dephasing processes.

Original language	English
Pages (from-to)	285-290
Number of pages	6
Journal	Chemical Physics
Volume	338
Issue number	2-3
DOIs	https://doi.org/10.1016/j.chemphys.2007.05.032
Publication status	Published - 2007 Sep 25

Keywords

Density operator
Isotope separation
Markov master equation
Multi-photon transition
Optimal control

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/j.chemphys.2007.05.032

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title = "Optimal control of multi-photon isotope separation using ultra-short intense laser pulses: Density operator theory",

abstract = "Wave packet isotope separation using short intense laser pulses is examined by means of optimal control simulation through a case study of the separation of a 79Br2/81Br2 mixture. Both electronic and vibrational degrees of freedom are considered. A designed optimal pulse enhances the isotope-dependent phase shifts in the wave packets through multi-photon transitions, causes isotope-dependent quantum interferences, and transfers each isotope to its specified objective state. The present isotope separation scheme achieves a high degree of selectivity even in the presence of dephasing processes.",

keywords = "Density operator, Isotope separation, Markov master equation, Multi-photon transition, Optimal control",

author = "Yukiyoshi Ohtsuki and Yuichi Fujimura",

note = "Funding Information: We acknowledge stimulating discussions with Professor Atsushi Yokoyama, Professor Keiichi Yokoyama, and Professor Kenji Ohmori. This work was partly supported by a Grant-in-Aid from MEXT of Japan (17550005).",

year = "2007",

month = sep,

day = "25",

doi = "10.1016/j.chemphys.2007.05.032",

language = "English",

volume = "338",

pages = "285--290",

journal = "Chemical Physics",

issn = "0301-0104",

publisher = "Elsevier",

number = "2-3",

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TY - JOUR

T1 - Optimal control of multi-photon isotope separation using ultra-short intense laser pulses

T2 - Density operator theory

AU - Ohtsuki, Yukiyoshi

AU - Fujimura, Yuichi

N1 - Funding Information: We acknowledge stimulating discussions with Professor Atsushi Yokoyama, Professor Keiichi Yokoyama, and Professor Kenji Ohmori. This work was partly supported by a Grant-in-Aid from MEXT of Japan (17550005).

PY - 2007/9/25

Y1 - 2007/9/25

N2 - Wave packet isotope separation using short intense laser pulses is examined by means of optimal control simulation through a case study of the separation of a 79Br2/81Br2 mixture. Both electronic and vibrational degrees of freedom are considered. A designed optimal pulse enhances the isotope-dependent phase shifts in the wave packets through multi-photon transitions, causes isotope-dependent quantum interferences, and transfers each isotope to its specified objective state. The present isotope separation scheme achieves a high degree of selectivity even in the presence of dephasing processes.

AB - Wave packet isotope separation using short intense laser pulses is examined by means of optimal control simulation through a case study of the separation of a 79Br2/81Br2 mixture. Both electronic and vibrational degrees of freedom are considered. A designed optimal pulse enhances the isotope-dependent phase shifts in the wave packets through multi-photon transitions, causes isotope-dependent quantum interferences, and transfers each isotope to its specified objective state. The present isotope separation scheme achieves a high degree of selectivity even in the presence of dephasing processes.

KW - Density operator

KW - Isotope separation

KW - Markov master equation

KW - Multi-photon transition

KW - Optimal control

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DO - 10.1016/j.chemphys.2007.05.032

M3 - Article

AN - SCOPUS:34548524604

VL - 338

SP - 285

EP - 290

JO - Chemical Physics

JF - Chemical Physics

SN - 0301-0104

IS - 2-3

ER -

Optimal control of multi-photon isotope separation using ultra-short intense laser pulses: Density operator theory

Abstract

Keywords

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